Hiccup Horrendous Haddock III is the main character in the book series "How to Train Your Dragon" by Cressida Cowell. He is a young Viking and the son of Stoick the Vast, the chief of the Berk tribe. Hiccup is known for his intelligence and creativity, often using unconventional methods to solve problems, especially when it comes to dragons. Throughout the series, Hiccup develops a unique bond with a dragon named Toothless. Together, they face various challenges and adventures, ultimately changing the way Vikings view dragons. Hiccup's journey emphasizes themes of friendship, bravery, and understanding.